how to fix the P0171 code on my Honda CR-V Sixth Generation (2023-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool before starting work.

2. Inspect and Repair Air Intake System

• Tools Required: Socket set, vacuum gauge, flashlight
  • A. Visually inspect the intake manifold and vacuum hoses for any signs of wear or damage.
  • B. Use a vacuum gauge to check for vacuum leaks. If a leak is detected, replace the faulty hoses or seals.
  • C. Reconnect all components securely.

3. Clean or Replace MAF Sensor

• Tools Required: MAF sensor cleaner, screwdriver
  • A. Locate the MAF sensor in the air intake duct.
  • B. Disconnect the electrical connector and remove the sensor using the screwdriver.
  • C. Clean the MAF sensor with a dedicated cleaner; do not touch the sensor elements.
  • D. If the sensor is faulty, replace it with a new one.

4. Check Fuel Delivery

• Tools Required: Fuel pressure gauge
  • A. Locate the fuel rail and connect the fuel pressure gauge.
  • B. Turn the ignition to the "ON" position (do not start the engine) and check the pressure reading.
  • C. If the pressure is below specifications, inspect the fuel pump and filter for issues, replacing any faulty components.

5. Inspect Fuel Injectors

• Tools Required: Fuel injector cleaning kit or replacement injectors
  • A. Remove the fuel injectors from the fuel rail.
  • B. Inspect for clogs or leaks visually.
  • C. Clean the injectors using a cleaning kit or replace them if necessary.
  • D. Reinstall the injectors and fuel rail securely.

6. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0171 code from the ECM.